[Flipside]

Hi,

I'm looking to generate a colour map like the image below and display it on the screen. Any/all guidance welcome, but the thing I'm trying to figure out right now is the math behind it (with respect to the RGB values). It seems that as you move horizontally, the RGB values all change relative to each other (i.e. higher red, lower blue/green), and then as you move vertically, the RGB values all change collectively (i.e. all move towards the colour being grey). I'm not sure how to code this though and I can't even seem to find an example somewhere on Google - maybe I'm not searching for the correct terms. Anyways, thanks in advance for any help!

[JackOfAllTrades]

Where you're not looking for code, just the math behind it, I'll move this to Software Development

[cfoley]

I think that palette might be easier understood in HLS. Across the way the hue is changing. Down the way, it's the saturation. Googling for the maths behind the conversion from HLS to RGB might be a good start.

[Flipside]

cfoley, on 01 February 2012 - 07:21 PM, said:

I think that palette might be easier understood in HLS. Across the way the hue is changing. Down the way, it's the saturation. Googling for the maths behind the conversion from HLS to RGB might be a good start.

Thanks for the reply. I will look into it.